/*

This file is part of Ext JS 4

Copyright (c) 2011 Sencha Inc

Contact:  http://www.sencha.com/contact

Commercial Usage
Licensees holding valid commercial licenses may use this file in accordance with the Commercial Software License Agreement provided with the Software or, alternatively, in accordance with the terms contained in a written agreement between you and Sencha.

If you are unsure which license is appropriate for your use, please contact the sales department at http://www.sencha.com/contact.

*/
/**
 * @class Ext.form.field.Base
 * @extends Ext.Component

Base class for form fields that provides default event handling, rendering, and other common functionality
needed by all form field types. Utilizes the {@link Ext.form.field.Field} mixin for value handling and validation,
and the {@link Ext.form.Labelable} mixin to provide label and error message display.

In most cases you will want to use a subclass, such as {@link Ext.form.field.Text} or {@link Ext.form.field.Checkbox},
rather than creating instances of this class directly. However if you are implementing a custom form field,
using this as the parent class is recommended.

__Values and Conversions__

Because BaseField implements the Field mixin, it has a main value that can be initialized with the
{@link #value} config and manipulated via the {@link #getValue} and {@link #setValue} methods. This main
value can be one of many data types appropriate to the current field, for instance a {@link Ext.form.field.Date Date}
field would use a JavaScript Date object as its value type. However, because the field is rendered as a HTML
input, this value data type can not always be directly used in the rendered field.

Therefore BaseField introduces the concept of a "raw value". This is the value of the rendered HTML input field,
and is normally a String. The {@link #getRawValue} and {@link #setRawValue} methods can be used to directly
work with the raw value, though it is recommended to use getValue and setValue in most cases.

Conversion back and forth between the main value and the raw value is handled by the {@link #valueToRaw} and
{@link #rawToValue} methods. If you are implementing a subclass that uses a non-String value data type, you
should override these methods to handle the conversion.

__Rendering__

The content of the field body is defined by the {@link #fieldSubTpl} XTemplate, with its argument data
created by the {@link #getSubTplData} method. Override this template and/or method to create custom
field renderings.
{@img Ext.form.BaseField/Ext.form.BaseField.png Ext.form.BaseField BaseField component}
__Example usage:__

    // A simple subclass of BaseField that creates a HTML5 search field. Redirects to the
    // searchUrl when the Enter key is pressed.
    Ext.define('Ext.form.SearchField', {
        extend: 'Ext.form.field.Base',
        alias: 'widget.searchfield',
    
        inputType: 'search',
    
        // Config defining the search URL
        searchUrl: 'http://www.google.com/search?q={0}',
    
        // Add specialkey listener
        initComponent: function() {
            this.callParent();
            this.on('specialkey', this.checkEnterKey, this);
        },
    
        // Handle enter key presses, execute the search if the field has a value
        checkEnterKey: function(field, e) {
            var value = this.getValue();
            if (e.getKey() === e.ENTER && !Ext.isEmpty(value)) {
                location.href = Ext.String.format(this.searchUrl, value);
            }
        }
    });

    Ext.create('Ext.form.Panel', {
        title: 'BaseField Example',
        bodyPadding: 5,
        width: 250,
                
        // Fields will be arranged vertically, stretched to full width
        layout: 'anchor',
        defaults: {
            anchor: '100%'
        },
        items: [{
            xtype: 'searchfield',
            fieldLabel: 'Search',
            name: 'query'
        }]
        renderTo: Ext.getBody()
    });

 *
 * @markdown
 * @docauthor Jason Johnston <jason@sencha.com>
 */
Ext.define('Ext.form.field.Base', {
    extend: 'Ext.Component',
    mixins: {
        labelable: 'Ext.form.Labelable',
        field: 'Ext.form.field.Field'
    },
    alias: 'widget.field',
    alternateClassName: ['Ext.form.Field', 'Ext.form.BaseField'],
    requires: ['Ext.util.DelayedTask', 'Ext.XTemplate', 'Ext.layout.component.field.Field'],

    fieldSubTpl: [
        '<input id="{id}" type="{type}" ',
        '<tpl if="name">name="{name}" </tpl>',
        '<tpl if="size">size="{size}" </tpl>',
        '<tpl if="tabIdx">tabIndex="{tabIdx}" </tpl>',
        'class="{fieldCls} {typeCls}" autocomplete="off" />',
        {
            compiled: true,
            disableFormats: true
        }
    ],

    /**
     * @cfg {String} name The name of the field (defaults to undefined). This is used as the parameter
     * name when including the field value in a {@link Ext.form.Basic#submit form submit()}. If no name is
     * configured, it falls back to the {@link #inputId}. To prevent the field from being included in the
     * form submit, set {@link #submitValue} to <tt>false</tt>.
     */

    /**
     * @cfg {String} inputType
     * <p>The type attribute for input fields -- e.g. radio, text, password, file (defaults to <tt>'text'</tt>).
     * The extended types supported by HTML5 inputs (url, email, etc.) may also be used, though using them
     * will cause older browsers to fall back to 'text'.</p>
     * <p>The type 'password' must be used to render that field type currently -- there is no separate Ext
     * component for that. You can use {@link Ext.form.field.File} which creates a custom-rendered file upload
     * field, but if you want a plain unstyled file input you can use a BaseField with inputType:'file'.</p>
     */
    inputType: 'text',

    /**
     * @cfg {Number} tabIndex The tabIndex for this field. Note this only applies to fields that are rendered,
     * not those which are built via applyTo (defaults to undefined).
     */

    /**
     * @cfg {String} invalidText The error text to use when marking a field invalid and no message is provided
     * (defaults to 'The value in this field is invalid')
     */
    invalidText : 'The value in this field is invalid',

    /**
     * @cfg {String} fieldCls The default CSS class for the field input (defaults to 'x-form-field')
     */
    fieldCls : Ext.baseCSSPrefix + 'form-field',

    /**
     * @cfg {String} fieldStyle Optional CSS style(s) to be applied to the {@link #inputEl field input element}.
     * Should be a valid argument to {@link Ext.core.Element#applyStyles}. Defaults to undefined. See also the
     * {@link #setFieldStyle} method for changing the style after initialization.
     */

    /**
     * @cfg {String} focusCls The CSS class to use when the field receives focus (defaults to 'x-form-focus')
     */
    focusCls : Ext.baseCSSPrefix + 'form-focus',

    /**
     * @cfg {String} dirtyCls The CSS class to use when the field value {@link #isDirty is dirty}.
     */
    dirtyCls : Ext.baseCSSPrefix + 'form-dirty',

    /**
     * @cfg {Array} checkChangeEvents
     * <p>A list of event names that will be listened for on the field's {@link #inputEl input element}, which
     * will cause the field's value to be checked for changes. If a change is detected, the
     * {@link #change change event} will be fired, followed by validation if the {@link #validateOnChange}
     * option is enabled.</p>
     * <p>Defaults to <tt>['change', 'propertychange']</tt> in Internet Explorer, and <tt>['change', 'input',
     * 'textInput', 'keyup', 'dragdrop']</tt> in other browsers. This catches all the ways that field values
     * can be changed in most supported browsers; the only known exceptions at the time of writing are:</p>
     * <ul>
     * <li>Safari 3.2 and older: cut/paste in textareas via the context menu, and dragging text into textareas</li>
     * <li>Opera 10 and 11: dragging text into text fields and textareas, and cut via the context menu in text
     * fields and textareas</li>
     * <li>Opera 9: Same as Opera 10 and 11, plus paste from context menu in text fields and textareas</li>
     * </ul>
     * <p>If you need to guarantee on-the-fly change notifications including these edge cases, you can call the
     * {@link #checkChange} method on a repeating interval, e.g. using {@link Ext.TaskManager}, or if the field is
     * within a {@link Ext.form.Panel}, you can use the FormPanel's {@link Ext.form.Panel#pollForChanges}
     * configuration to set up such a task automatically.</p>
     */
    checkChangeEvents: Ext.isIE && (!document.documentMode || document.documentMode < 9) ?
                        ['change', 'propertychange'] :
                        ['change', 'input', 'textInput', 'keyup', 'dragdrop'],

    /**
     * @cfg {Number} checkChangeBuffer
     * Defines a timeout in milliseconds for buffering {@link #checkChangeEvents} that fire in rapid succession.
     * Defaults to 50 milliseconds.
     */
    checkChangeBuffer: 50,

    componentLayout: 'field',

    /**
     * @cfg {Boolean} readOnly <tt>true</tt> to mark the field as readOnly in HTML
     * (defaults to <tt>false</tt>).
     * <br><p><b>Note</b>: this only sets the element's readOnly DOM attribute.
     * Setting <code>readOnly=true</code>, for example, will not disable triggering a
     * ComboBox or Date; it gives you the option of forcing the user to choose
     * via the trigger without typing in the text box. To hide the trigger use
     * <code>{@link Ext.form.field.Trigger#hideTrigger hideTrigger}</code>.</p>
     */
    readOnly : false,

    /**
     * @cfg {String} readOnlyCls The CSS class applied to the component's main element when it is {@link #readOnly}.
     */
    readOnlyCls: Ext.baseCSSPrefix + 'form-readonly',

    /**
     * @cfg {String} inputId
     * The id that will be given to the generated input DOM element. Defaults to an automatically generated id.
     * If you configure this manually, you must make sure it is unique in the document.
     */

    /**
     * @cfg {Boolean} validateOnBlur
     * Whether the field should validate when it loses focus (defaults to <tt>true</tt>). This will cause fields
     * to be validated as the user steps through the fields in the form regardless of whether they are making
     * changes to those fields along the way. See also {@link #validateOnChange}.
     */
    validateOnBlur: true,

    // private
    hasFocus : false,
    
    baseCls: Ext.baseCSSPrefix + 'field',
    
    maskOnDisable: false,

    // private
    initComponent : function() {
        var me = this;

        me.callParent();

        me.subTplData = me.subTplData || {};

        me.addEvents(
            /**
             * @event focus
             * Fires when this field receives input focus.
             * @param {Ext.form.field.Base} this
             */
            'focus',
            /**
             * @event blur
             * Fires when this field loses input focus.
             * @param {Ext.form.field.Base} this
             */
            'blur',
            /**
             * @event specialkey
             * Fires when any key related to navigation (arrows, tab, enter, esc, etc.) is pressed.
             * To handle other keys see {@link Ext.panel.Panel#keys} or {@link Ext.util.KeyMap}.
             * You can check {@link Ext.EventObject#getKey} to determine which key was pressed.
             * For example: <pre><code>
var form = new Ext.form.Panel({
    ...
    items: [{
            fieldLabel: 'Field 1',
            name: 'field1',
            allowBlank: false
        },{
            fieldLabel: 'Field 2',
            name: 'field2',
            listeners: {
                specialkey: function(field, e){
                    // e.HOME, e.END, e.PAGE_UP, e.PAGE_DOWN,
                    // e.TAB, e.ESC, arrow keys: e.LEFT, e.RIGHT, e.UP, e.DOWN
                    if (e.{@link Ext.EventObject#getKey getKey()} == e.ENTER) {
                        var form = field.up('form').getForm();
                        form.submit();
                    }
                }
            }
        }
    ],
    ...
});
             * </code></pre>
             * @param {Ext.form.field.Base} this
             * @param {Ext.EventObject} e The event object
             */
            'specialkey'
        );

        // Init mixins
        me.initLabelable();
        me.initField();

        // Default name to inputId
        if (!me.name) {
            me.name = me.getInputId();
        }
    },

    /**
     * Returns the input id for this field. If none was specified via the {@link #inputId} config,
     * then an id will be automatically generated.
     */
    getInputId: function() {
        return this.inputId || (this.inputId = Ext.id());
    },

    /**
     * @protected Creates and returns the data object to be used when rendering the {@link #fieldSubTpl}.
     * @return {Object} The template data
     */
    getSubTplData: function() {
        var me = this,
            type = me.inputType,
            inputId = me.getInputId();

        return Ext.applyIf(me.subTplData, {
            id: inputId,
            name: me.name || inputId,
            type: type,
            size: me.size || 20,
            cls: me.cls,
            fieldCls: me.fieldCls,
            tabIdx: me.tabIndex,
            typeCls: Ext.baseCSSPrefix + 'form-' + (type === 'password' ? 'text' : type)
        });
    },

    /**
     * @protected
     * Gets the markup to be inserted into the outer template's bodyEl. For fields this is the
     * actual input element.
     */
    getSubTplMarkup: function() {
        return this.getTpl('fieldSubTpl').apply(this.getSubTplData());
    },

    initRenderTpl: function() {
        var me = this;
        if (!me.hasOwnProperty('renderTpl')) {
            me.renderTpl = me.getTpl('labelableRenderTpl');
        }
        return me.callParent();
    },

    initRenderData: function() {
        return Ext.applyIf(this.callParent(), this.getLabelableRenderData());
    },

    /**
     * Set the {@link #fieldStyle CSS style} of the {@link #inputEl field input element}.
     * @param {String/Object/Function} style The style(s) to apply. Should be a valid argument to
     * {@link Ext.core.Element#applyStyles}.
     */
    setFieldStyle: function(style) {
        var me = this,
            inputEl = me.inputEl;
        if (inputEl) {
            inputEl.applyStyles(style);
        }
        me.fieldStyle = style;
    },

    // private
    onRender : function() {
        var me = this,
            fieldStyle = me.fieldStyle,
            renderSelectors = me.renderSelectors;

        Ext.applyIf(renderSelectors, me.getLabelableSelectors());

        Ext.applyIf(renderSelectors, {
            /**
             * @property inputEl
             * @type Ext.core.Element
             * The input Element for this Field. Only available after the field has been rendered.
             */
            inputEl: '.' + me.fieldCls
        });

        me.callParent(arguments);

        // Make the stored rawValue get set as the input element's value
        me.setRawValue(me.rawValue);

        if (me.readOnly) {
            me.setReadOnly(true);
        }
        if (me.disabled) {
            me.disable();
        }
        if (fieldStyle) {
            me.setFieldStyle(fieldStyle);
        }

        me.renderActiveError();
    },

    initAria: function() {
        var me = this;
        me.callParent();

        // Associate the field to the error message element
        me.getActionEl().dom.setAttribute('aria-describedby', Ext.id(me.errorEl));
    },

    getFocusEl: function() {
        return this.inputEl;
    },

    isFileUpload: function() {
        return this.inputType === 'file';
    },

    extractFileInput: function() {
        var me = this,
            fileInput = me.isFileUpload() ? me.inputEl.dom : null,
            clone;
        if (fileInput) {
            clone = fileInput.cloneNode(true);
            fileInput.parentNode.replaceChild(clone, fileInput);
            me.inputEl = Ext.get(clone);
        }
        return fileInput;
    },

    // private override to use getSubmitValue() as a convenience
    getSubmitData: function() {
        var me = this,
            data = null,
            val;
        if (!me.disabled && me.submitValue && !me.isFileUpload()) {
            val = me.getSubmitValue();
            if (val !== null) {
                data = {};
                data[me.getName()] = val;
            }
        }
        return data;
    },

    /**
     * <p>Returns the value that would be included in a standard form submit for this field. This will be combined
     * with the field's name to form a <tt>name=value</tt> pair in the {@link #getSubmitData submitted parameters}.
     * If an empty string is returned then just the <tt>name=</tt> will be submitted; if <tt>null</tt> is returned
     * then nothing will be submitted.</p>
     * <p>Note that the value returned will have been {@link #processRawValue processed} but may or may not have
     * been successfully {@link #validate validated}.</p>
     * @return {String} The value to be submitted, or <tt>null</tt>.
     */
    getSubmitValue: function() {
        return this.processRawValue(this.getRawValue());
    },

    /**
     * Returns the raw value of the field, without performing any normalization, conversion, or validation.
     * To get a normalized and converted value see {@link #getValue}.
     * @return {String} value The raw String value of the field
     */
    getRawValue: function() {
        var me = this,
            v = (me.inputEl ? me.inputEl.getValue() : Ext.value(me.rawValue, ''));
        me.rawValue = v;
        return v;
    },

    /**
     * Sets the field's raw value directly, bypassing {@link #valueToRaw value conversion}, change detection, and
     * validation. To set the value with these additional inspections see {@link #setValue}.
     * @param {Mixed} value The value to set
     * @return {Mixed} value The field value that is set
     */
    setRawValue: function(value) {
        var me = this;
        value = Ext.value(value, '');
        me.rawValue = value;

        // Some Field subclasses may not render an inputEl
        if (me.inputEl) {
            me.inputEl.dom.value = value;
        }
        return value;
    },

    /**
     * <p>Converts a mixed-type value to a raw representation suitable for displaying in the field. This allows
     * controlling how value objects passed to {@link #setValue} are shown to the user, including localization.
     * For instance, for a {@link Ext.form.field.Date}, this would control how a Date object passed to {@link #setValue}
     * would be converted to a String for display in the field.</p>
     * <p>See {@link #rawToValue} for the opposite conversion.</p>
     * <p>The base implementation simply does a standard toString conversion, and converts
     * {@link Ext#isEmpty empty values} to an empty string.</p>
     * @param {Mixed} value The mixed-type value to convert to the raw representation.
     * @return {Mixed} The converted raw value.
     */
    valueToRaw: function(value) {
        return '' + Ext.value(value, '');
    },

    /**
     * <p>Converts a raw input field value into a mixed-type value that is suitable for this particular field type.
     * This allows controlling the normalization and conversion of user-entered values into field-type-appropriate
     * values, e.g. a Date object for {@link Ext.form.field.Date}, and is invoked by {@link #getValue}.</p>
     * <p>It is up to individual implementations to decide how to handle raw values that cannot be successfully
     * converted to the desired object type.</p>
     * <p>See {@link #valueToRaw} for the opposite conversion.</p>
     * <p>The base implementation does no conversion, returning the raw value untouched.</p>
     * @param {Mixed} rawValue
     * @return {Mixed} The converted value.
     */
    rawToValue: function(rawValue) {
        return rawValue;
    },

    /**
     * Performs any necessary manipulation of a raw field value to prepare it for {@link #rawToValue conversion}
     * and/or {@link #validate validation}, for instance stripping out ignored characters. In the base implementation
     * it does nothing; individual subclasses may override this as needed.
     * @param {Mixed} value The unprocessed string value
     * @return {Mixed} The processed string value
     */
    processRawValue: function(value) {
        return value;
    },

    /**
     * Returns the current data value of the field. The type of value returned is particular to the type of the
     * particular field (e.g. a Date object for {@link Ext.form.field.Date}), as the result of calling {@link #rawToValue} on
     * the field's {@link #processRawValue processed} String value. To return the raw String value, see {@link #getRawValue}.
     * @return {Mixed} value The field value
     */
    getValue: function() {
        var me = this,
            val = me.rawToValue(me.processRawValue(me.getRawValue()));
        me.value = val;
        return val;
    },

    /**
     * Sets a data value into the field and runs the change detection and validation. To set the value directly
     * without these inspections see {@link #setRawValue}.
     * @param {Mixed} value The value to set
     * @return {Ext.form.field.Field} this
     */
    setValue: function(value) {
        var me = this;
        me.setRawValue(me.valueToRaw(value));
        return me.mixins.field.setValue.call(me, value);
    },


    //private
    onDisable: function() {
        var me = this,
            inputEl = me.inputEl;
        me.callParent();
        if (inputEl) {
            inputEl.dom.disabled = true;
        }
    },

    //private
    onEnable: function() {
        var me = this,
            inputEl = me.inputEl;
        me.callParent();
        if (inputEl) {
            inputEl.dom.disabled = false;
        }
    },

    /**
     * Sets the read only state of this field.
     * @param {Boolean} readOnly Whether the field should be read only.
     */
    setReadOnly: function(readOnly) {
        var me = this,
            inputEl = me.inputEl;
        if (inputEl) {
            inputEl.dom.readOnly = readOnly;
            inputEl.dom.setAttribute('aria-readonly', readOnly);
        }
        me[readOnly ? 'addCls' : 'removeCls'](me.readOnlyCls);
        me.readOnly = readOnly;
    },

    // private
    fireKey: function(e){
        if(e.isSpecialKey()){
            this.fireEvent('specialkey', this, Ext.create('Ext.EventObjectImpl', e));
        }
    },

    // private
    initEvents : function(){
        var me = this,
            inputEl = me.inputEl,
            onChangeTask,
            onChangeEvent;
        if (inputEl) {
            me.mon(inputEl, Ext.EventManager.getKeyEvent(), me.fireKey,  me);
            me.mon(inputEl, 'focus', me.onFocus, me);

            // standardise buffer across all browsers + OS-es for consistent event order.
            // (the 10ms buffer for Editors fixes a weird FF/Win editor issue when changing OS window focus)
            me.mon(inputEl, 'blur', me.onBlur, me, me.inEditor ? {buffer:10} : null);

            // listen for immediate value changes
            onChangeTask = Ext.create('Ext.util.DelayedTask', me.checkChange, me);
            me.onChangeEvent = onChangeEvent = function() {
                onChangeTask.delay(me.checkChangeBuffer);
            };
            Ext.each(me.checkChangeEvents, function(eventName) {
                if (eventName === 'propertychange') {
                    me.usesPropertychange = true;
                }
                me.mon(inputEl, eventName, onChangeEvent);
            }, me);
        }
        me.callParent();
    },

    doComponentLayout: function() {
        var me = this,
            inputEl = me.inputEl,
            usesPropertychange = me.usesPropertychange,
            ename = 'propertychange',
            onChangeEvent = me.onChangeEvent;

        // In IE if propertychange is one of the checkChangeEvents, we need to remove
        // the listener prior to layout and re-add it after, to prevent it from firing
        // needlessly for attribute and style changes applied to the inputEl.
        if (usesPropertychange) {
            me.mun(inputEl, ename, onChangeEvent);
        }
        me.callParent(arguments);
        if (usesPropertychange) {
            me.mon(inputEl, ename, onChangeEvent);
        }
    },

    // private
    preFocus: Ext.emptyFn,

    // private
    onFocus: function() {
        var me = this,
            focusCls = me.focusCls,
            inputEl = me.inputEl;
        me.preFocus();
        if (focusCls && inputEl) {
            inputEl.addCls(focusCls);
        }
        if (!me.hasFocus) {
            me.hasFocus = true;
            me.fireEvent('focus', me);
        }
    },

    // private
    beforeBlur : Ext.emptyFn,

    // private
    onBlur : function(){
        var me = this,
            focusCls = me.focusCls,
            inputEl = me.inputEl;
        me.beforeBlur();
        if (focusCls && inputEl) {
            inputEl.removeCls(focusCls);
        }
        if (me.validateOnBlur) {
            me.validate();
        }
        me.hasFocus = false;
        me.fireEvent('blur', me);
        me.postBlur();
    },

    // private
    postBlur : Ext.emptyFn,


    /**
     * @private Called when the field's dirty state changes. Adds/removes the {@link #dirtyCls} on the main element.
     * @param {Boolean} isDirty
     */
    onDirtyChange: function(isDirty) {
        this[isDirty ? 'addCls' : 'removeCls'](this.dirtyCls);
    },


    /**
     * Returns whether or not the field value is currently valid by
     * {@link #getErrors validating} the {@link #processRawValue processed raw value}
     * of the field. <b>Note</b>: {@link #disabled} fields are always treated as valid.
     * @return {Boolean} True if the value is valid, else false
     */
    isValid : function() {
        var me = this;
        return me.disabled || me.validateValue(me.processRawValue(me.getRawValue()));
    },


    /**
     * <p>Uses {@link #getErrors} to build an array of validation errors. If any errors are found, they are passed
     * to {@link #markInvalid} and false is returned, otherwise true is returned.</p>
     * <p>Previously, subclasses were invited to provide an implementation of this to process validations - from 3.2
     * onwards {@link #getErrors} should be overridden instead.</p>
     * @param {Mixed} value The value to validate
     * @return {Boolean} True if all validations passed, false if one or more failed
     */
    validateValue: function(value) {
        var me = this,
            errors = me.getErrors(value),
            isValid = Ext.isEmpty(errors);
        if (!me.preventMark) {
            if (isValid) {
                me.clearInvalid();
            } else {
                me.markInvalid(errors);
            }
        }

        return isValid;
    },

    /**
     * <p>Display one or more error messages associated with this field, using {@link #msgTarget} to determine how to
     * display the messages and applying {@link #invalidCls} to the field's UI element.</p>
     * <p><b>Note</b>: this method does not cause the Field's {@link #validate} or {@link #isValid} methods to
     * return <code>false</code> if the value does <i>pass</i> validation. So simply marking a Field as invalid
     * will not prevent submission of forms submitted with the {@link Ext.form.action.Submit#clientValidation}
     * option set.</p>
     * @param {String/Array} errors The validation message(s) to display.
     */
    markInvalid : function(errors) {
        // Save the message and fire the 'invalid' event
        var me = this,
            oldMsg = me.getActiveError();
        me.setActiveErrors(Ext.Array.from(errors));
        if (oldMsg !== me.getActiveError()) {
            me.doComponentLayout();
        }
    },

    /**
     * <p>Clear any invalid styles/messages for this field.</p>
     * <p><b>Note</b>: this method does not cause the Field's {@link #validate} or {@link #isValid} methods to
     * return <code>true</code> if the value does not <i>pass</i> validation. So simply clearing a field's errors
     * will not necessarily allow submission of forms submitted with the {@link Ext.form.action.Submit#clientValidation}
     * option set.</p>
     */
    clearInvalid : function() {
        // Clear the message and fire the 'valid' event
        var me = this,
            hadError = me.hasActiveError();
        me.unsetActiveError();
        if (hadError) {
            me.doComponentLayout();
        }
    },

    /**
     * @private Overrides the method from the Ext.form.Labelable mixin to also add the invalidCls to the inputEl,
     * as that is required for proper styling in IE with nested fields (due to lack of child selector)
     */
    renderActiveError: function() {
        var me = this,
            hasError = me.hasActiveError();
        if (me.inputEl) {
            // Add/remove invalid class
            me.inputEl[hasError ? 'addCls' : 'removeCls'](me.invalidCls + '-field');
        }
        me.mixins.labelable.renderActiveError.call(me);
    },


    getActionEl: function() {
        return this.inputEl || this.el;
    }

});

